Tire-protector.



W; T. DORGAN.

I TIRE PROTECTOR.

APPLICATION FILED H01 8, 191 1.

Patented m 21, 1912.

' Witnesses: I

' ill Jillian: Borg an,

EGAN, or AKRON,

man.- 4 "liat'l, WILLIAM T. DORGAN, United States, residing. at nary of Summit and State vented new and useful Imli'rotectors, of which the IfiCELtlOD; v 'el at'es to tire-protectors of g 1n United states Letters to me Nov. 19,1907, r o. e, 1-910,'N0. 965,695.

hisinvention is to con or of the type described u arlyformed bodyportion of d abl e material provided with onnection with which it is used I v self-maintaining irrespective of the inflation or defiation of the tire, And 2 further aprimary objectof'the invention tl oteeror a. somewhat angular conformatire-protector is mounted in a tire or tireshoe, which is ordinarily approximately cylindrical when inflated, the various inner facets of the protector which engage the re speetive portions of the tire or tire-shoe will contact therewith tangentially so that the portions of the tire-protector atthe angles between the various facets thereof will lie opposite to but out of contact with the por- .tions or Zones of the tile or tire-protector which are subjected to the greatest flexion and vibration, and in so doing the wear on these portions of the tire or tire-shoe is thereby materially reduced' In other words, the inner .face of' the tire-protector will have an approximately polygonal contour in cross-section so that: when disposed on a cylindrical or approximately cylindrical tire the sides of the polygonal figure will be tangential t6 the cylindrical outline of the tire and the angular portions at the junction of the sides of the polygonal figure will be out of contact therewith. i With the foregoing and construction, combination and arrangement of parts constituting the 'lIlVQlT-liOll to be hereinafter specifically described and illustrated inthe accompanying drawings which form '55 a Dart hereof wherein is shown'the pre Application filed. Novembe 18,1911; seriarnqfeilise,

ferr-ed embodimentof the but hiclrwill'hug the tire or tire-1 t to the inner face of the wall of clearly demonstrated that theff hich is produced by forming the same s'uit able core or l-nandrel having the before-mentioned shape, so that when the" other objects in the inyention consists n the novel rarnncr oar-10E.

*Paten is to be understood that changesLvariations and modifications can be resorted to' i'vhich comewithin the scope of the claimsfhefe- ,untoappended. 1 1' m V .3111 the drawings in which similar reference numerals indicate like parts -in t-he 01110, AssIGuon'To THE STANDARD TIRE into'rnc'rofi different figures, Figure 1, isa perspective view of a section of a pneumatic tire-shoe .showing asection of myimpro'ved protector mounted thereon andin operative relation therewith, said protector being con struc'ted in accordance with this inven i and, Fig. 2, isa transverse sectional view of a core or mandrel used in buildingfup" the tire-protector a section of which shown 1nF1g.1.'

Referring to the drawings detail the *2 reference numeral 1 denotes an ordinary" tire-shoe provided with the usu; beads '2 and tread portion 3. lilxpe'r n'cej has Q rti o ns A:

of the -tire-shoe on each side of. tli: ea are subject'to the greatest amount f H Xi'on and are most severely vibrated injuse. Mounted on the tlI'GrShOP/l is annular tire-protector 5 constructed to and purposes in} approximately the manner as has been described in the-beforementioned' Letters-Patent and embodying a wear-resisting anti-skid outer face' 6 anda plurality of layers of rubber impregnated fabric 7 on which is mounted the tread 8. This protector is also provided with grippingbeads' 9 for hugging the lateral walls of the tire ortire-shoe firmly so as to main t'ain'itself against displacement when in use. Ordinarily :the innerwall of the tireprotector 5 is provided with-a lining'of rubber-saturated fabric 10 which is adapted to receive the wear and to contact with the outer' surface of the tread. portion of the tire-shoe 1. practice, I build up the. tire-shoe on a core .or mandrel 11 having approximately the configuration shown in'' with "theouter portion thereof Fig.

assurfaces of conic frusta 12 united.

formed to form along the central line of the tire'- Near the'protector is in use to spring or move laterally-toward each "other to" gllp the side faces-of the tire 'or tire-shoe in connection by the reference numeral 4, and will not.

contact therewith intimately during the vibration or distortion of the tire-shoe in use, thereby reducing to .a/ minimum the" wear on the tire or tire-shoe when this peculiarly-shaped protector is used. a

It may be pointed out V tor shoe, having across sectional configuration such as is shown in Fig, 1, no matter how long it is used,

it during its manufacture and inherently retains this shape at all times.

I claim: r 1. A tire-protector adapted to be mounted on a tire or tire-shoe and comprising anv annularly-formed sheath having a general senn-cn'cular form incross-section with the inner face thereof polygonally-fashioned, the lateral edges of said sheath being provided with beads adapted tovgrip the lateral form surfaces of come will still retailithe angular configuration,,which is imparted to.

retain said protector in position, the

tangentially whereby the angular portions .of the inner face of the protector 'willlie opposite to but-out, of contact with certain e 0e whichlare' subjected to the greatest flexion or vibration.

2L'A tire-protector adapted to. be mount ed on a'tire or tire-shoe and comprising an ann'u arly-formed sheath of material yield-1' able (in unison with the-tire or t ire-fshoeflon i portions of the tireor tirewhich .it

is mounted, said tire-protector having a general semi -circu1ar' form incross-section, the lateral edges thereof prof vided with beads adapted to gripthelateral.

faces of the tire. or tire-shoe and to 'therev by retain the'tire-protector in Fo'sitiomfthe' that a tire-protecg v innerface of said "protector ashioned to frusta by obtuse-arigles to tl1ereby form an approxi- .matelypoly'gonal figure, the sidespf which are adapted to engagethe' outer faceof said tire; or tire-shoe tangentially whereby the angular portions at the junction of the 'surfaces of the inner face of the protector will lie opposite to but out oi contact with those portions of the tire or tire-'shoe-which are subjectedto the greatest fiexion or vibration,

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

' WILLIAM T. DORGAN. Witnesses W. G. HARRIs,

R. M. LINNEUX. 

